The Pearl Index, also called the Pearl rate, is the most common technique used in clinical trials for reporting the effectiveness of a birth control method.
Read more about Pearl Index: Calculation and Usage, History, Criticisms
Famous quotes containing the words pearl and/or index:
“High on a throne of royal state, which far
Outshone the wealth of Ormus and of Ind,
Or where the gorgeous East with richest hand
Show’rs on her kings barbaric pearl and gold,
Satan exalted sat, by merit raised
To that bad eminence; and, from despair
Thus high uplifted beyond hope, aspires
Beyond thus high, insatiate to pursue
Vain war with Heav’n, and by success untaught,
His proud imaginations”
—John Milton (1608–1674)
“Exile as a mode of genius no longer exists; in place of Joyce we have the fragments of work appearing in Index on Censorship.”
—Nadine Gordimer (b. 1923)